Web service interfaces often need to provide stateful interactions with the clients of the service. For example, a web service interface such as a shopping cart, where the result of one operation influences the carrying out of the succeeding operations. The OASIS Web Services Resource Framework (WSRF) defines a generic framework for modelling and accessing stateful resources using web services, so that the definition and implementation of a service and the integration and management of multiple services is easier.
You can implement a stateful web service as a WS-Resource, and reference it by using a WS-Addressing endpoint reference. You develop WS-Resources in the same way as ordinary web services, and by using the same tools. However, you must complete some additional tasks, as described in this topic.